This article rocks and will allow me to have one less things to integrate. Thank you soo much.

...that in the downloads of the article is a helper to authenticate against ActiveDirectory as a real example.

And thanks for that comment!

Glad to be helpful (even more if there are some ISA servers to be replaced as a side effect of the article :-D).

Excellent article. My company is working on providing Internet pre-paid system to miners who are in the middle of nowhere. The only backhaul we have is Satellite, so we have to treasure our bandwidth. We are tinkling with NoCat at the moment. This article opens up a new possibility of a whole new system all together. Of course, we have to think of how to block all traffics that squid cannot proxy, or else there will be holes in this system (`iptables' to the rescue!). Also, how to tunnel other traffics via HTTP.

hi
first thank you for your nice article . I have a problem with the script
when i want to run it ( /bin/php /etc/squid/script.php)
it says :

Constant STDIN already defined in /etc/squid/script.php on line 3

please help me.
best regards

i have problem when using this document. this is the error :
The basicauthenticator helpers are crashing too rapidly, need help!

sounds like your program is crashing right after squid starts it (or them, if you have many children). Did you test it as a standalone console application before using it with squid to see that it receives the username/password pair and replies with OK/ERR in an infinite cycle?

first tanx for your answer ; I have delete that line and now my script( ofcourse yours ) is like this

<?
while (!feof(STDIN)) {
$line = trim(fgets(STDIN));
$fields = explode(' ', $line);
$username = rawurldecode($fields[0]); //1738
$password = rawurldecode($fields[1]); //1738
if ($username == 'hello'
and $password == 'world') {
fwrite(STDOUT, "OK\n");
} else if ($username == 'fo'
and $password == 'bar') {
fwrite(STDOUT, "OK\n");
} else {
// failed miserably
fwrite(STDOUT, "ERR\n");
}
}
?>

and now result of excuting /bin/php script.php is :(of course when i enter a string)

PHP Notice: Undefined offset: 1 in /omid/omid.php on line 10
ERR

any suggestion ?

Why don't you email me? I just copied (verbatim) your script and tried it over here and it worked:

$ php prueba.php
hello world
OK
foo
ERR
foo bar
ERR
fo bar
OK
it's ok
ERR

Maybe the problem is here:
$ php -version
PHP 5.2.3-1ubuntu2 (cli) (built: Jul 4 2007 16:13:07)
Copyright (c) 1997-2007 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies

Anyway, email me so we can take a closer look at what's going on. eantoranz at google's public mail service, you know, right? :-D

The problem is the define call. I have the fopen() right in the define, and it fails that way. If you do the fopen and save the result in a temporary variable, it works.

Try with this:

if (! defined(STDIN)) {
$temp = fopen("php://stdin", "r");
define("STDIN", $temp);
}

It worked with version 5.1.2 that way.

It worked with 5.2.3 the original way... I guess it's a bug in 5.1.2

Thanks for your wonderful article. I am having problems with your script. I believe it is due to the fact that my windows 2003 AD requires authentication to do any LDAP binds. I have another php LDAP application that connects to my AD successfully as it has a variable to configure a user account to connect to the AD with.

Can you please tell me how I can edit your script to bind to ldap using a username and password?

thanks

Ahmed, in the article's attachments, there's a PHP script that authenticates against AD through LDAP, and it binds to AD using the username/password provided by squid. Are you having problems with that script? Email me if you have any problems: eantoranz at gmail dot com.

Thanks a lot for your nice article and for writing for the freesoftwaremagazine.

In many environments the transmission of usernames and passwords as cleartext is not acceptable.

Do you haven an idea of how to solve this problem an transmit the authorization data between client and proxy encrypted?

Regards.
Tobias